Reinforced concrete railway-sleeper.



M. BRUKNER.

RBINPORCED CONCRETE RAILWAY SLEEPER.

APPLICATION FILED 00T. 1oI 190e.

Patented Feb. 9, 1909.

lig/li j# r-L-A 1,8 I Yf/f l! MAURICE BRUKNER,V OF BUDAPEST, AUSTRIA-HUNGARY.

Original application iled October 23, 1987', Serial No. 398,763.

Specification of Letters Fatent.

nnrnroncnn cenonernvjgnerne/AY-snnnrnn.

Eatented Feb. 9, 1909.

Divided and this application :filed Gctober 10, 1908.

Serial lilo. $7,339.

To all whom it' may concern:

Be it lrnown that l, MAURICE Bianiircnn, a subjector the King oif Hungary, and resident of B idapest, in the Empire of r'l-rustria- Hungary, have invented certain new and 'use- 'iul improvements in leiniorced Concrete Railway-Sleepers, of which the following is a specitication, being a division or" my application, Serial No. 398,763, Filed October 23, 190'?.

My invention relates to railway sleepers constructed or concrete with iron reintorcenient and more especially to a construction of the wood wedges serving to receive the tirefonds or bolts, allowing an easy renewal of the wedges when they are worn out.

My invention is describe@ with reference to the annexed drawing in which- Figure l is a sectional elevation and Fi 2 a plan view or the improved sleeper. hi 3 is an enlargecL cross section on line 3 3 of Fig. l.

l is the concrete body of the sleepers, a and -Z)- are longitudinal iron bars and (Z- are wire binders forming together with the longitudinal iron bars a strong framework embedded in the concrete.

riChe sleeper is formed with widened parts 3, 3 in which the holes l5, li are provid-ed, said holes being tapered from top to bottom. rit the bottom oit holes l5, iron cross plates 17 are arranged, provided with a screw threaded central boring 19. l'nto the holes 16 are itted the wood wedges 8 having a re cess 9. rlhis recess 9 is narrower, than the width of the toot of the rail 2 so that the rail rests upon the upper face of the wood wedge. rEhe wood wedge has a vertical boring through which extends a screw bolt l0 engaging the screw thread of the boring 19 of the plate l?. The head of the screw bolt l0 lies on the bottom of the recess 9 and a J. the

wood wedge 1l fitted in said recess serves to protect the screw head.

By this construction the wood wedge can be easily removed and tightened if necessary. The means-securing the wood wedge in the sleeper 'are well protected against external iniiuences and being arranged underneath the foot of the rail, they do not require an enlarwement of the width of the wood wedge, hence allow to keep the dimensions or' the w od wedges and oi the holes i6 as small as possible. 'lhus the costs et the wedges are redt ed and the parts of the sleeper containing the wedges are not weakened as it would happen with larger wedges and holes.

To protect the concrete against strains caused by the wedges, hoops lS may be arged surrounding the holes 16.

it the ends of the sleeper preferably wire cts 14C are embedded near to the surface.

Having described my invention., what l claim is:

l. ln a reinforced concrete sleeper, a wooden wedge inserted with its smaller end downwards in a correspondingly shaped holein the concrete, a recess in the upper part or' the wooden wedge, an iron plate arranged the bottom oit said hole, a screw bolt eX- tending vertically through the wedge and engagmg with screw threaded boring oi' said iron plate, the head of said screw bolt resting within the recess or the wooden wedge.

2. ln a reinforced concrete sleeper, a wooden wedge inserted with its smaller end dov-fnwards in a correspondingly shaped hole in the concrete, recess in the upper part of the wooden wedge, an iron 1ate arranged at the bottom of said hole, a sorew bolt entending vertically through the wedge and engaging with a screw threaded boring et said iron plate, the head of said screw bolt resting within the recess of the wooden wedge, and a stopper blocl closing the recess of the wooden wedge.

ln 'testimony whereof, l have signed my naine to this specification in the presence et two subscribing witnesses.

MAURICE BRULNER.

YWitnesses z EUGENE lilnnnonr, MICHAEL WINAN. 

